For this one, I would be an F22 Raptor pilot, part of an attack wing on the way to attack a Chinese fleet about to invade the hawaiian Islands, then the US. It could be something natural, or a side effect of some new Chinese weapon, but my Raptor would be transported from December 8 2016 to December 6,1941, and be in a position to warn the islands about the impending attack, then make a life for herself in 1941 with what she knows about the course of WW2